<template>
  <xtx-bread>
    <XtxBreadItem to="/">首页</XtxBreadItem>

    <XtxBreadItem v-if="category.top" :to="`/category/${category.top.id}`">{{category.top.name}}</XtxBreadItem>
    <Transition name="fade-right" mode="out-in">
      <XtxBreadItem v-if="category.sub" :key="category.sub.id">{{category.sub.name}}</XtxBreadItem>
    </Transition>

  </xtx-bread>
</template>

<script>
import { useStore } from 'vuex'
import { useRoute } from 'vue-router'
import { computed } from 'vue'
export default {
  name: 'SubBread',
  setup () {
    const store = useStore()
    const route = useRoute()

    const category = computed(() => {
      const obj = {}

      store.state.category.list.forEach(top => {
        top.children && top.children.forEach(sub => {
          if (sub.id === route.params.id) {
            obj.sub = { id: sub.id, name: sub.name }
            obj.top = { id: top.id, name: top.name }
          }
        })
      })

      return obj
    })

    return { category }
  }

}
</script>

<style lang="less" scoped>

</style>
